* Czech Jan PMI jumps 3rd month to 53.1, from 50.8 in Dec * Hungarian PMI rises above 50 for first time since Aug 2008
* Polish PMI slips to 51.0, from 52.2 in Dec
By Michael Winfrey
PRAGUE, Feb 1 (Reuters) - Manufacturing in the two emerging European Union economies most linked to the euro zone leapt ahead in January after positive news from their export mainstay Germany, but slowed in the region's largest economy Poland.
Economists were surprised by the improvement felt by Czech and Hungarian producers and expressed guarded optimism that the recovery in one of the world's regions hit hardest by the crisis may be finding traction.
But they warned the improvement was still largely driven by government stimulus in richer western European states, some of which is already easing off, leaving risks the region's recovery could falter in the second half of 2010.
The Czech Purchasing Managers' Index (PMI) jumped for the third straight month to 53.1, from 50.8 in December, data compiled by Markit Economics, showed, with acceleration in both output and new orders.
Hungary's PMI, compiled under different methodology, climbed to 53.5, from 49.1 in December, rising above the break-even 50 level demarcating growth from contraction for the first time since August 2008.
"The reasons are obvious: an improvement in economic climate in the euro zone, which can be observed in new orders and production," said David Marek, chief economist in Prague-based Patria Finance.
"We are a small and open economy, and just as we were quickly pulled down by the euro zone in times of the downturn, we are being pulled up again. The reaction of the Czech economy is more significant than, say, in Poland." In Poland, whose 38-million strong domestic market helped make it the only EU state to avoid contraction during the crisis -- it grew by 1.7 percent last year -- PMI slipped to 51.0 points in January, from 52.4 in December.
Although still above 50, the figure was hurt by deceleration in new orders and slippage in employment, the latter of which is expected to continue to deteriorate to a jobless figure of around 12.8 percent at the end of the year.
Analysts noted that the reading, though below forecast and lower than in the previous month, remained above the break-even level for growth and showed that the Polish economy was continuing to stabilise, albeit at a slower pace.
"It indicates that 2010 economic growth is unlikely to be better than what we saw at the end of 2009," said Mateusz Szczurek, chief economist at ING in Warsaw.
The Polish zloty <EURPLN=> led gains among its peers on Monday, firming more than 1 percent to its strongest level in a year and briefly breaking 4.00 to the euro. The Czech crown and Hungarian forint were both up marginally higher.
GERMAN RECOVERY KEY The Czech data was helped particularly by a rise in new export orders, while manufacturers there also shed jobs at a slower pace than in 2009, Markit said.
In December, the country showed its first rise in industrial output since autumn of 2008, when the crisis crushed demand in western Europe and caused double-digit drops in output among eastern European producers.
The PMI jump also resembled a rise in Germany's January Ifo business climate index, which rose more than expected to its highest level in 18 months and eased some concerns that Germany could falter because of a harsh winter and other factors.
Some analysts expressed surprise that the end of car scrapping subsidies in Germany and a still-uncertain view on foreign demand had not weighed more heavily on the Czech and Hungarian economy in the first part of the year.
But analysts said improving demand in the euro zone, which consumes the vast majority of Czech and Hungarian output, was still driven by government stimulus, and the entire region would still take several years to return to pre-crisis growth.
"For now at least, demand in western Europe seems to be dragging the more open economies forward," said Neil Shearing, from Capital Economics.
(Editing by Patrick Graham)